In order to generate more endorsement revenue, Champion City's resident superhero Captain Amazing arranges for the release of supervillain Casanova Frankenstein, only to be captured by him. The city's fate rests in the hands of seven loser superhero wannabes: the spoon-flinging Blue Rajah, the shovel-wielding Shoveler, the possessed bowling ball-hurling Bowler, the flatulent Spleen, the only-when-nobody's-looking Invisible Boy, the mysterious Sphinx, and the perpetually-angry Mr. Furious.